Influence of the Content of Nickel Powders on the Electromagnetic Properties of SingleLayer Coated Polyester-Cotton Plain Weave Fabric

材料科学 复合材料 电介质 耗散因子 电磁屏蔽 电磁辐射 复合数 聚酯纤维 反射损耗 介电损耗 光学 冶金 光电子学 物理
作者
Yuanjun Liu,Huangyu Xue,Ciyi Wang,Xiaohui Han,Xiaoming Zhao
出处
期刊:Fibres & Textiles in Eastern Europe [Index Copernicus International S.A.]
卷期号:30 (5): 47-52
标识
DOI:10.2478/ftee-2022-0043
摘要

Abstract A coated composite was prepared on polyester-cotton plain weave fabric, using PU2540 polyurethane as the matrix. The influences of the content of nickel powders on the dielectric constant (the real and imaginary parts and loss tangent value), reflection loss and shielding effectiveness of single-layer coated composites were mainly investigated. The results showed that within the frequency range of 1–1000 MHz, the value of the real part of the dielectric constant of the coated composites was the largest, and the polarisation ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 15–225 MHz, the value of the imaginary part of the dielectric constant of the coated composites was the largest and the loss ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 250–800 MHz, the loss tangent value of the dielectric constant of coated composites was the largest, and the attenuation ability with regard to electromagnetic waves was the strongest when the content of nickel powders was 40%. Within the frequency range of 1220–3000 MHz, the reflection loss value was the smallest when the content of nickel powders was 40%, and its absorption ability with regard to electromagnetic waves was the strongest. Within the frequency range of 760–3000 MHz, the shielding effectiveness of the coated composite was the largest when the content of nickel powders was 40%.
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